Lost a potential client today. Went to her home and took her through some exercises (squat, deadlift, bench) and she seemed 100% ready to buy. Today I get an email saying her chiropractor told her not to do my program because of her lower back problem. Didn't anticipate this actually, I can see it being a real problem when clients or potential clients go to a medical practioner and hear about how my having them squat below parallel will ruin their knees. I probably need to start advertising more towards those who want to barbell train and get strong, but that's like 2% of the people who make up the market for PT.